125749810 has 8 divisors (see below), whose sum is σ = 226349676. Its totient is φ = 50299920.

The previous prime is 125749787. The next prime is 125749823. The reversal of 125749810 is 18947521.

It can be written as a sum of positive squares in 2 ways, for example, as 120099681 + 5650129 = 10959^2 + 2377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×125749810² = 31626029430072200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125749810.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6287481 + ... + 6287500.

Almost surely, 2^125749810 is an apocalyptic number.

125749810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125749810 is a deficient number, since it is larger than the sum of its proper divisors (100599866).

125749810 is a wasteful number, since it uses less digits than its factorization.

125749810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12574988.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 125749810 is about 11213.8222743184. The cubic root of 125749810 is about 500.9977543149.

The spelling of 125749810 in words is "one hundred twenty-five million, seven hundred forty-nine thousand, eight hundred ten".